A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions

A voltammetric electronic tongue was constituted by four screen-printed modified electrodes: a carbon nanofiber modified electrode, an ex-situ antimony film electrode prepared from carbon nanofiber modified electrode, and two carbon nanofiber electrodes chemically modified withCys and GSH. The tongu...

Descripción completa

Detalles Bibliográficos
Autores: Pérez Ràfols, Clara, Serrano i Plana, Núria, Díaz Cruz, José Manuel, Ariño Blasco, Cristina, Esteban i Cortada, Miquel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/127711
Acceso en línea:https://hdl.handle.net/2445/127711
Access Level:acceso abierto
Palabra clave:Voltametria
Elèctrodes
Metalls pesants
Voltammetry
Electrodes
Heavy metals
id ES_da8d4c3d9c237a48f4edd41f4d9a975b
oai_identifier_str oai:diposit.ub.edu:2445/127711
network_acronym_str ES
network_name_str España
repository_id_str
spelling A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ionsPérez Ràfols, ClaraSerrano i Plana, NúriaDíaz Cruz, José ManuelAriño Blasco, CristinaEsteban i Cortada, MiquelVoltametriaElèctrodesMetalls pesantsVoltammetryElectrodesHeavy metalsA voltammetric electronic tongue was constituted by four screen-printed modified electrodes: a carbon nanofiber modified electrode, an ex-situ antimony film electrode prepared from carbon nanofiber modified electrode, and two carbon nanofiber electrodes chemically modified withCys and GSH. The tongue was successfully applied to the analysis of a complex mixture of metal ions (4 analytes and 2 interferences) by differential pulse anodic stripping voltammetry. Each sensor was firstly studied for the determination of each metal separately confirming that all electrodes showed differentiated response for the metals. The obtained voltammetric signals provided by the sensor array were processed by Partial Least Squares regression (PLS) to resolve the overlapped nature of the obtained multimetal stripping measurements. This PLS model was built considering a hierarchical model in order to reduce the large amount of data. The method was applied to synthetic mixtures of Cd(II), Pb(II), Tl(I), and Bi(III) in the presence of Zn(II) and In(III) at the levels of μg L-1 and successfully validated with correlation coefficients of both calibration and prediction higher than 0.9 obtained from predicted vs. expected concentration graphs. Moreover, the simultaneous determination of Cd(II), Pb(II), Tl(I), and Bi(III) in the presence of Zn(II) and In(III) in a spiked tap water was also satisfactory achieved, providing comparable results to those obtained by ICP-MS.Elsevier B.V.2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/127711Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.snb.2017.04.165Sensors and Actuators B-Chemical, 2017, vol. 250, p. 393-401https://doi.org/10.1016/j.snb.2017.04.165cc-by-nc-nd (c) Elsevier B.V., 2017http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1277112026-05-27T06:46:51Z
dc.title.none.fl_str_mv A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
title A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
spellingShingle A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
Pérez Ràfols, Clara
Voltametria
Elèctrodes
Metalls pesants
Voltammetry
Electrodes
Heavy metals
title_short A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
title_full A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
title_fullStr A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
title_full_unstemmed A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
title_sort A screen-printed voltammetric electronic tongue for the analysis of complex mixtures of metal ions
dc.creator.none.fl_str_mv Pérez Ràfols, Clara
Serrano i Plana, Núria
Díaz Cruz, José Manuel
Ariño Blasco, Cristina
Esteban i Cortada, Miquel
author Pérez Ràfols, Clara
author_facet Pérez Ràfols, Clara
Serrano i Plana, Núria
Díaz Cruz, José Manuel
Ariño Blasco, Cristina
Esteban i Cortada, Miquel
author_role author
author2 Serrano i Plana, Núria
Díaz Cruz, José Manuel
Ariño Blasco, Cristina
Esteban i Cortada, Miquel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Voltametria
Elèctrodes
Metalls pesants
Voltammetry
Electrodes
Heavy metals
topic Voltametria
Elèctrodes
Metalls pesants
Voltammetry
Electrodes
Heavy metals
description A voltammetric electronic tongue was constituted by four screen-printed modified electrodes: a carbon nanofiber modified electrode, an ex-situ antimony film electrode prepared from carbon nanofiber modified electrode, and two carbon nanofiber electrodes chemically modified withCys and GSH. The tongue was successfully applied to the analysis of a complex mixture of metal ions (4 analytes and 2 interferences) by differential pulse anodic stripping voltammetry. Each sensor was firstly studied for the determination of each metal separately confirming that all electrodes showed differentiated response for the metals. The obtained voltammetric signals provided by the sensor array were processed by Partial Least Squares regression (PLS) to resolve the overlapped nature of the obtained multimetal stripping measurements. This PLS model was built considering a hierarchical model in order to reduce the large amount of data. The method was applied to synthetic mixtures of Cd(II), Pb(II), Tl(I), and Bi(III) in the presence of Zn(II) and In(III) at the levels of μg L-1 and successfully validated with correlation coefficients of both calibration and prediction higher than 0.9 obtained from predicted vs. expected concentration graphs. Moreover, the simultaneous determination of Cd(II), Pb(II), Tl(I), and Bi(III) in the presence of Zn(II) and In(III) in a spiked tap water was also satisfactory achieved, providing comparable results to those obtained by ICP-MS.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/127711
url https://hdl.handle.net/2445/127711
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.snb.2017.04.165
Sensors and Actuators B-Chemical, 2017, vol. 250, p. 393-401
https://doi.org/10.1016/j.snb.2017.04.165
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2017
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2017
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869421589075853312
score 15.228081

Similares en LA Referencia